Window-sash stop



T. WERTZ AND F. W. SPRINGMEYEB.

wmoow SASH. STOP. APPLICATION FILED JULY 3, I918.

1,337,495. P tented Apr 20, 192i).

wuawtam i%/ZZ I M672); 2263/5 Wm THOMAS VJ'ERTZ AND WERTZ ASSIGNOP; 01*ONE-S CRINNEON, BOTl-i V. SPRIBTGMEYER, OF ERVIN OE ST. LQUIS,MlfiSUUE-I.

ST. LOUIS, MISSOURI; SAID MAUHE A113 ONE-SIXTH TO JOHN VTINDO' H-SASI-ISTOP.

Application filed. July 3, 1918.

To all to 7mm it may concern:

Be rt known that we, Trroares VJERTZ ant. new ar on m, -,1- .2nEuinnLUlL I U131) qhlLYIllL ClolZQllS O1 16 nited States, residing atSt. Louis, in the L State of Missouri, have inven ed certain new anduseful Improvements in lVinoow-Sash and we do declare the following todescription i vention, such as will enable other skilled in the to whichit appertains to malre and use the same.

This invention relates to window sash stops, and it relates morespecifically to an improved device for preventing relative movement ofthe upper and lower sash beyond a predetermined distance.

One object of our invention is to pro vide a device of this character inwhich the stop element is capable of quick and easy removal by a personat the side of the window to which thedevice is attached, so as to allowthe window to be opened to its full extent.

Another object of the invention is to provide a device of this characterin which the two separable stop elements may be quickly Figure 1 is afragmental portion of a' window having our improved window stop securedthereon;

Fig. 2 is a vertical sectional view along the line 2-2 in Fig. 1;

Fig. '3 is a horizontal sectional view along the line 3-3 of Fig. 1;

Fig. 4 is a perspective view of the element which is permanentlyattached to the window sash;

Fig. 5 is a perspective view of the element which is removably securedto the sash through the medium of the element illustrated in 'Fig. a;and

Fig. 6 is a fragmental detail view which shows the inner side of theupper part or": the permanently secured element.

Referring to these drawings in detail in which similar referencecharacters correspond with similar parts throughout the several views,the upper sash a and the lower Specification of Letters Patent.

Patented Apr. 20, 1920.

Serial No. 243,169.

sash 6, being of ordinary construction, are not described in detailexcept to mention the ccss c which receives the permanently securedelement 7 which is shown separately in Fig. 1. This element 7 comprisesa plate which is formed with a pair of parallel flanges 8 which extendsat right angles from the intermediate portion 9. The intermertion 9 isprovided with screw holes I 10 through which suitable .crews may beengaged with the sash a as shown in Fig. 2. A stud or boss 11 extendsfrom one side of the plate 7, and a stud or spur 12 extends from theopposite side of the plate, the spur 12 being useful as a means forholding the plate 7 in position on the sash while the latter is beingscribed for outlining the aperture 0, and also being useful forcooperating with the screws for holding the plate in the recess 0. Theplate 7 is formed with a boss 13, a corresponding recess 1 1, and aradially extending aperture or slot 15; said boss and recess beingconcentric with one another, and one of the apertures 15 beingconcentric with the boss and aperture and communicating with the latter.A shoulder 16 is formed eccentrically in the recess 14;, and thisshoulder forms a stop against which a locking element normally rests.The locking element referred to comprises a shank 17, a shoulder 18, amanipulative element 19, and a wing or lateral extension 20 in the shank17. The shank 17 extends through a single aperture or bearing 21 whichis formed in a normally vertical wing 22 of the stop element shown inFig. 5, this stop element being formed with a normally horizontal wins23 and with a base element 2 1 which renders this stop element verystrong and rigid. The vertical wing 22 is formed with an aperture 25which normally receives the stud 11, and this element 22 is also formedwith a recess 26 which normally receives the boss 13 and conforms to theshape and size of the latter.

It will be seen that the stop element 22 is merely in the path of thesash b, but not secured to it, and so the stud 11 and boss 13 canquickly and easily be inserted in their respective seats regardless ofthe relative positions of the complemental sashes. This feature is veryimportant, because when one part is secured to the lower sash and theother part of the upper sash, the shrinking or swelling of the sashesand window frames causes the relative positions of the complemental stopelements to vary and this often renders it impossible to engage the stopelements with one another.

The stud 11 is somewhat longer than the boss 13, measured along theiraxes and therefore the stud 11 will begin to enter the aperture 25before the boss 13 enters the recess 26. Therefore, in theevent that theshank 17 of the securing elements is prevented by its lateral extension20 from entering the aperture 15. it is only necessary to turn thesecuring element until the lateral extension registers with that of theaperture 15, and the shank 1? will pass freely through the aperture 15while the boss 13 passes freely into the recess 26. liiioreover, it willbe seen that the stud ll supplements the boss 13 in strengthening theconnection or engagement of the stop member 22 with the stop member 7.

When the elements of the device are assembled in the normal positionshown in Fig. 2, the parallel edges of the wing 22 fit snugly betweenthe flange 8,v the stud 11 t snugly in the aperture the boss i snugly 1nthe recess 26, the shoulder 18 fis snu 'ly against the outer surface ofthe wing o c 22, and the lateral extension 20 fits snugly against theinner surface of the recess l t and against the shoulder 16.Thereforedzhe elements of the device are securely locked together, andit would be impossible to cause any relative vertical movement betweenthe elements shown in Figs. eland 5 unti. the manipulative element 19 isturned to bring the wing 20 in registration with the radial slot 15; butwhen the manipulative element is thus turned the latter may be employedas a handle for easily withdrawing the stop element from the permanentlysecured element. When the stop element has thus been removed, the upperand lower sashes may be moved vertically with relation to one anotherwithout any interference by this device. However when they are in the assembled rela 'ion, the wing 23 and brace element 24 extend laterallyover the lower sash, and the latter cannot then be moved beyond thepredetermined distance which is'determined by the location of theelement 17 the upper sash.

Although we have described this embodiment of our invention veryspecifically, it is not intended to limit this invention to these exactdetails of construction and arrangement of parts but we are entitled tomaize minor changes wit 'n the scope of the in ventive idea disclosed inthe foregoing description and following clain rVVhat we claim as ourinvention is:

A sash stop comprising a vertical plate for attachment to an upper sash,said plate having parallel flanges integral with the .l edges of itsouter side, a prong integral with the inner side of said plate near itslower end and adapted to be driven into the sash, ,a lug integral withtheouter side of said plate in line with'said prong and adapted toreceive blows from a ham ner whereby to drive said prong without inyuuing the plate or its flanges a boss integral with the outer side of saidplate near its upper end, said plate having in its inner side a socketalined with said boss and provided with an internal stop, said bosshaving a key hole slot opening into said socket, a second vertical platereceivable between said flanges and having an opening and a socketreceiving said lug and said boss respectively, a sash stop on the lowerend of said. second plate, a pin passing through said second plate forreception in said keyhole slot, a lateral projection on the inner end ofsaid pin for disposition in the first named socket when said pin isturned, and a winged head on the outer end of said pin for contact withthe outer side of said second plate.

In testimony whereof we have hereunto set our hands.

THOMAS WERTZ. FREDERICK W. SPRINGMEYER.

